Ignition system for hydrocarbon-engines.



L. DAVIS. IGNITION SYSTEM FOR HYDROCARBON ENGINES.

APPLICATIONAFILEDI APR-"2,61 1915.

Patented Mar. 28

D STATES PATENT OFFICE.

DAVIS, RICH HILL, MISSOURI, ASSIGNOB OF ONE-HALF TO I. L. WIERICK, OF

RICH HILL, MISSOURI.

IGNITION SYSTEM FOR HYDRQCARBON-ENGINES.

Specificationof Letters Patent.

Patented Mar.

Application filed April 26, 1915. Serial No. 24,002.

1 0 all whom it may concern:

Be. it known that I, LOUIS DAVIS, a citizen of the United States of America, residing at Rich Hill, in the county of Bates and State 1 of, Missouri, have invented new and useful improvements in Ignition Systems for Hydrocarbon-Engines, of which the following is a specification.

This invention relates to improvements in ignition systems for hydrocarbon engines 7 and has particular application to the timer structure. I g

In carrying out the present invention, it is my purpose to provide a timer for the ignition systems of hydrocarbon engines which will be constructed insuch manner that the wiring of the system may be sim-' scope of the claims.

In the accompanying drawing; the figure 1s a diagrammatic view of an ignition system equipped with a timer constructed in "accordance with the present invention.

Referring now to the drawing in detail, 1 designates a suitable source of electrical energy, such, for instance, as'a battery, 2 indicates an induction coil and 3 designates my improved timer, while the spark plugs in the cylinders of theengine are indicated at a.

My improved timer comprises an outer ring 4 preferably composed of insulating material, an inner ring 5 disposed concentrically of the outer ring and preferably formed of conducting material and a contact arm 6 pivoted at the center of the inner ring 5. Secured to the inner edge of the ring 4 and spaced apart equidistant are contacts 9, while secured to the inner edge of the ring 5 are contacts spaced apart equidistant andcorresponding to the contacts 9 respectively. Rotatably mounted upon the arm 6 are rollers 7 and 8 designed to engage the contacts 10 and 9 respectively in the rotation ofthe arm 6. As usual,. the arm 6 is connected with the timer shaft of: the engine'and is driven from such \shaft.

" Leadingfrom one side of the battery 1 is a. conductor 11 connected to one terminal of the, primary winding of the vibrator coil 2 and leading from the remaining terminal of the primary winding of the vibrator coil isaconductor 12 terminally connected with the arm 6. One side of the secondary winding of the induction coil is connected to the conductor 12 by 'way of a wire 13, while the remaining terminal of the secondary winding is grounded as at 14:. From the contacts 9 in the ring 4c lead conductors 15 connected with the power electrodes of the respective spark plugs 1, while the remaining electrodes of the spark plugs are grounded upon I the engine as usual. A switch .16 is preferably located in the conductor 11 so that the'ignition circuit may be made and broken whenever desired. i

In practice, when the switch 16 is closed, currentfiows from one side of the battery 1, through the conductor 11, the primary winding of the coil 2, the conductor 12, the contactarm 6, the roller 7, the contact 10 in engagement with such roller, the ring 5 and back to the other side of the battery by way of a conductor 17 that connects the ring 5 with the battery. When the primary winding is thus energized the vibrator is set in action and as a result a high potential current is produced in the secondary winding and flows through the wire 13, the portion of the conductor 12, the arm 6, contact roller 8, the contact 9, in engagement with the roller 8, the spark plugs of the engine and back to the other side of the secondary winding of the induction coil by way of the ground. Thus a spark is created at the electrodes of the spark plugs toignite the charge in the engine cylinders- In the operation ofthe engine, the arm G'is revolved and the rollers 7 and 8 engage the contacts 10 and 9 respectively successively, thereby energizing the spark plugs in the respective engine cylinders in the proper. order.

I claim:

In an ignition system for hydrocarbonengines, a source of electrical energy, an

induction coil, a timer comprising an inner rollers carried by said arln and adapted to engage the contacts on said inner and outer rings respectively successively in the rota: tion of said arm, a connection between one terminal of the battery and one terminal of the primary winding of said'induction coil, a connection between the remaining terminal of the primary Winding of the induction co'il andsaid arm, a connection between said conducting ring and the other side of said battery, a connection between the secondary winding of said coil and the connection between the. primarywinding and said arm, 

